A Zn(II)-based 1D coordination polymer: Temperature-induced SCSC transformation and selective sorption of Congo Red

Research on single-crystal-to-single-crystal photoaddition and extension of Schmidt's rule in topological chemistry

“…[27][28][29][30] Complexes synthesized with zinc ions, H 3 btc and 1,4-bpeb ligands were previously reported where one of the three carboxyl groups of H 3 btc was not deprotonated. 19,20 When NaOH was added to the reaction system, it facilitated the deprotonation of all three carboxyl groups of H 3 btc, resulting in the assembly of a new MOF, {[Zn 2 (μ 3 -OH)(1,3,5-btc)(1,4-bpeb)]•4.5H 2 O} n , 1. Meanwhile, with higher pH, the Zn 2+ underwent hydrolysis to form μ 3 -OH as a structural guide.…”

“…Topological chemistry studies provide detailed and specific information on the relationship between the structure and properties of substances at the atomic level. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Research in this field on coordination polymers (some of them are also known as MOFs) synthesized with bis[2-(4-pyridyl)ethenyl] benzene (bpeb) has attracted great attention from researchers, and a lot of interesting results have been obtained. [4][5][6][7][8][9][10][11][12][13][14] According to Schmidt's rule, the CC pairs in the solid phase must meet two requirements for photoaddition, namely: the spacing between CC pairs, d, is less than 4.2 Å and the angle between them, θ, is as close as possible to 0°.…”